


import axios from 'axios'

let cancel,promiseArr = {}
const CancelToken = axios.CancelToken;
//请求拦截器
axios.interceptors.request.use(config => {
    //发起请求时，取消掉当前正在进行的相同请求
    // if (promiseArr[config.url]) {
    //     promiseArr[config.url]('操作取消')
    //     promiseArr[config.url] = cancel
    // } else {
    //     promiseArr[config.url] = cancel
    // }
      return config
}, error => {
    return Promise.reject(error)
})

//响应拦截器即异常处理
axios.interceptors.response.use(response => {
    return response
}, err => {
    console.log(err);
    if (err && err.response) {
      switch (err.response.status) {
        case 400:
          err.message = '错误请求'
          break;
        case 401:
          err.message = '未授权，请重新登录'
          break;
        case 403:
          err.message = '拒绝访问'
          break;
        case 404:
          err.message = '请求错误,未找到该资源'
          break;
        case 405:
          err.message = '请求方法未允许'
          break;
        case 408:
          err.message = '请求超时'
          break;
        case 500:
          err.message = '服务器端出错'
          break;
        case 501:
          err.message = '网络未实现'
          break;
        case 502:
          err.message = '网络错误'
          break;
        case 503:
          err.message = '服务不可用'
          break;
        case 504:
          err.message = '网络超时'
          break;
        case 505:
          err.message = 'http版本不支持该请求'
          break;
        default:
          err.message = `连接错误${err.response.status}`
      }
    } else {
      err.message = "连接失败,请稍后重试"
    }
     alert("--->"+err.message)
     return Promise.resolve(err.response)
})

//axios.defaults.baseURL = '/api'
//设置默认请求头
axios.defaults.headers = {
    'X-Requested-With': 'XMLHttpRequest'
}
axios.defaults.timeout = 20000

export default {
  //get请求
   get(url,param) {
      return new Promise((resolve,reject) => {
        axios({
          method: 'get',
          url,
          params: param,
          cancelToken: new CancelToken(c => {
            cancel = c
          })
        }).then(res => {
          if(res.data){
            resolve(res.data)
          }else{
          
            reject(res);
          }
        }).catch(err=>{
       
        
          reject(err);
        })
      })
    },
  //post请求
   post (url,param) {
      return new Promise((resolve,reject) => {
        axios({
          method: 'post',
          url,
          data: param,
          cancelToken: new CancelToken(c => {
            cancel = c
          })
        }).then(res => {
            if(res.data){
              resolve(res.data)
            }else{
              reject(res);
            }
          
        }).catch(err=>{
        
         
          reject(err);
        })
      })
     }
}

function showAlert(error) {
 
     alert(error);
}
